:root {
  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
  font-weight: 400;
  font-size: 16px;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* scrollbar-gutter: stable;  */
  /* scrollbar-gutter: stable both-edges;  */
  background-color: #AAA;
}

body {
  margin: 0;
  display: flex;
  place-items: center;
  min-width: 320px;
  min-height: 100vh;
  width: 100vw; /* 确保 body 宽度占满视口 */
}

#app {
  position: relative;
  width: 100%; /* 继承 body 的宽度 */
  height: 100vh; /* 唯一盒子，让高度占满窗口 */
  margin: 0; /* 移除 margin */
  padding: 0; /* 移除 padding */
  text-align: center;
}
a {
  text-decoration: none;
  color: black;
}
p{
  padding: 0;
  margin: 0;
}